311045421 has 8 divisors (see below), whose sum is σ = 425936224. Its totient is φ = 201759120.

The previous prime is 311045401. The next prime is 311045429. The reversal of 311045421 is 124540113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311045421 - 2²⁶ = 243936557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311045429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400995 + ... + 1401216.

It is an arithmetic number, because the mean of its divisors is an integer number (53242028).

Almost surely, 2^311045421 is an apocalyptic number.

It is an amenable number.

311045421 is a deficient number, since it is larger than the sum of its proper divisors (114890803).

311045421 is a wasteful number, since it uses less digits than its factorization.

311045421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802251.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 311045421 is about 17636.4798358403. The cubic root of 311045421 is about 677.5498770032.

Adding to 311045421 its reverse (124540113), we get a palindrome (435585534).

The spelling of 311045421 in words is "three hundred eleven million, forty-five thousand, four hundred twenty-one".